Zusammenfassung der Ressource
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Q1. Tachometers in jet engines measure:
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Q2. Select the wrong answer about mechanical tachometers
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In the centrifugal type mass separates in proportion to the shaft rotating speed.
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Friction tachometers are very common in aviation.
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Magnetic drag tachometers use permanent magnets.
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There are four types.
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Q3. Electrical tachometers
Antworten
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Electrical generator with the rotor being linked to the engine rotational speed
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DC or AC. It is autonomous from the electrical aircraft system.
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Indicator unit is a squirrel cage induction motor fed with the current generated at detector. It is joint to a mechanism similar to the one in magnetic drag tachometers
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All of above are correct.
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Q4. Electronic tachometers
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Q5. Vibration is symptomatic of an impeding problem that could be caused by
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Q7. FUEL TOTALISER:
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Digitally displays the amount of fuel in each tank on a flight deck indicator and provides an indication of the total amount of fuel on board the aeroplane
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Allows the crew to select the amount of fuel to be refuelled
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Uses a motor driven impeller through which the fuel passes and makes the fuel swirl at a rotation rate proportional to the flow rate. Then, the swirling fuel impacts a receiver turbine, inducing a rate of rotation proportional to the swirl rate.
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All are correct
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Q8. ENGINE INDICATION AND CREW ALERTING SYSTEM